A Novel Time-Domain Formulation of 3-D Dyadic Diffraction Coefficient for Arbitrary Polarized UWB Signals with Oblique Incidence

Abstract

In this paper, a new time-domain (TD) three-dimensional dyadic diffraction coefficient is proposed for ultra wideband (UWB) signals with arbitrary polarization and oblique incidence. Simulation results are presented for diffraction by a single wedge, double wedge and building scenario with consecutive diffractions. An excellent agreement of the proposed TD solution with the inverse fast Fourier transform (IFFT) of the corresponding exact frequency-domain (FD) solution proves the validity of the TD solution. Also it is observed that the TD solution is computationally more efficient than the IFFT---FD method. The presented TD solution can be used to analyze diffracted field for arbitrary polarized UWB signals with oblique incidence.